One Minute Muffins

Mix melted butter, beaten egg, protein powder and baking powder.
Add sweetner.
Put all in a teacup and microwave on high for a minute (time can vary a little depending on microwave)
Turn out and let cool

The muffin may look kind of wet at first but it dries quickly as it cools.
Eat warm or wrap cooled muffin in plastic to eat later.